Heating-stove



A. ERICKSON.

' sTovE.

APPLICATION FILED SEPT. 5. 1919.

1,361,701 Patented Dec. 7, 1920.

UNITED STATES PATENT oFFICE. i

AUGUST ERICKSON, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR OIE ONE-HALF TOAXEL PERSON, 0F MINNEAPOLIS, MINNESOTA.

HEATING-STOVE.

Application filed September 5, 1919.

To all whom Macy concern Be it known that I, AUcUsr ERICKSON, a citizenof the United States, residing at Minneapolis, in the county of Hennepinand State of Minnesota, have invented certain new and usefulImprovements in Heating- Stoves; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

My invention has for its object to provide an improved heatingattachment or auxiliary heater for heating stoves, by the use of whicheither air or water may be heated and conveyed to a point or place moreor less remote from the stove or heater roper.

The invention consists of the combination of devices hereinafterdescribed and defined in the claim.

Particularly the auxiliary heater is designed for use in connection withcoal stoves that are equipped with central feed magazines for theautomatic delivery of the coal onto the grate; and for such application,the auxiliary heater is made of annular drumlike form of a size tosurround the fuel mag azine, but spaced within the wall of the stove soas to leave an annular flame passage from the grate upward, immediatelyadjacent to the outer wall of the stove.

The invention is illustrated in the accompanying drawings, wherein likecharacters indicate like parts throughout the several views. Referringto the drawings, Figure 1 is a view chiefly in vertical section on theline 1-1 of Fig. 2, but with some parts in full elevation, and Fig. 2,is a horizontal section taken approximately on the line 2 2 of Fig. 1.

The base portion of the stove is indicated by the. numeral 3, itsupright cylindrical shell by the numeral 4, its top plate by numeral 5,and the detachable cover by the numeral 6. This stove is assumed to beof a standard or well-known construction, equipped with the customaryfire-pot 7 grate 8, and fuel door 9. This stove may vary greatly indesign so far as my invention is concerned, but it is provided with thecentral fuel feeding magazine 10, which extends downward from the topplate 5 land terminates at a suitable point above the grate 8. Thenumeral 11, denotes a small cover for the upper end of magazine 10.

Specification of Letters Patent.

Patented Dec. 7, 1920.

Serial No. 321,878.

In the ordinary arrangement of a stove of this character, the spacebetween the magazine 10 and the outer wall 4 is usually clear orunobstructed so that flames pass freely against the walls of themagazine10, and are not always forced against the outer shell 4. The shell 4 isshown as provided near its top with a smoke pipe or outlet 12.

The auxiliary heating drum 13, as already indicated, is of an annulardrum form, may be either of cast-iron or sheet metal, and closely fitsthe exterior of the fuel magazine 10. The outer wall of the drum 13 isof such diameter as to leave between the same and the shell 4 an annularflame passage 14, of such size that it will not obstruct the draft butwill nevertheless cause the flames to pass upward and outward againstthe shell 4 on their way to the smoke pipe 12, thus insuring heating tothe greatest possible extent, of the said outer shell. This heatingaction just noted, while important is incidental to rather moreimportant features resulting from the use of the auxiliary heating drum.The top of the drum 13, is spaced from the top plate 5 of the stove soas to leave a hot air or llame passage; and at its bottom said drum isprovided with feet or rest lugs 15, that rest upon the top flange of thefire-pot 7. These feet or lugs 15, not only support the set of the drum13, from the fire-pot, but space the drum from the fire-pot, so as toleave the proper annular llame passage from the combustion chamberupward to the annular flame passage 14.

In the arrangement illustrated, the drum 13 is designed for heating airand hence is provided with an air intake pipe 16, that leads in throughone side of the shell 4 and opens in the lower portion of feed drum 13;near its top, feed drum 13 is provided with a hot air delivery pipe 17that leads out through the shell 4 and may be extended to any suitablepoint or place, such as a room remote from the heater or outside of theroom in which the stove is placed. For instance, the feed pipe 17y mightlead to an up-k per room.

It is, of course, evident that when air is heated in the drum 13 it willrise and pass outward through the delivery pipe 17, while the colder airwill be drawn into the drum 13 through the intake pipe 16 and thus keepup a circulation of the hot air. The air will be rapidly heated in thesaid auxiliary drum and the heat absorbed for this purpose will bechiefly that which is usually wasted by the escape of heat up a Chimney.

The auxiliary heating drum may be,

readily applied to stoves now in use but may, of course, be incorporatedin new stoves.

For the heating of. water the same drum or a drum of shghtly modifiedform and with water circulating Connections of well understoodarrangements may be employed.

That I claim is z- The Combination with a heating stove having a lirepot, a grate7 a closed annular heating drum within the stove and spacedapart therefrom and formed with an upwardly flaring vertical passagewayextending Completely through the heat-ing drum and entirely closedexcept at its ends, air intake and outlet pipes-extending through theshell of the stoverand opening into the heating drum at the top andbottom thereof, respectively, and a fuel magazine remov ably mounted insaid passageway.

In testimony whereof I affix my signature in presence of two witnesses.

AUGUST ERICKSON.

lVitnesses: Y

BERNIGE Gr. BAUMANN, HARRY D. KILGORE.

